Lattice tower assembly for a wind turbine

ABSTRACT

The present subject matter is directed to a lattice tower covering and/or assembly for a wind turbine. The lattice tower assembly includes a plurality of structural members connected together to define an open lattice tower. The structural members include a plurality of supports, a plurality of inner cross-support members, and a plurality of outer cross-support members. The inner and outer cross-support members are connected between the supports so as to define one or more openings. The lattice tower covering includes one or more panel elements. Each of the panel elements are retained in position between the supports and cover at least a portion of one or more of the openings. Further, the lattice tower covering has a surface area defined by the plurality of supports and the one or more panel elements.

FIELD OF THE INVENTION

The present invention relates generally to wind turbines, and moreparticularly to an improved lattice tower covering for a wind turbine.

BACKGROUND OF THE INVENTION

Conventional wind turbine towers typically include a tubular pole or alattice structure to support a wind turbine at a considerable height tocapture wind energy. The tubular pole configuration is relatively moresimple and easier to assemble than the lattice structure. However,tubular poles use more steel than the lattice structure, resulting in acost disadvantage with rising prices of steel.

Thus, lattice tower structures can have potential as an alternative tothe tubular poles, especially for high hub applications and for windturbines located in wind farms having challenging logistic requirements.For example, transporting the tubular tower sections to the site can bechallenging because the sections can be twenty plus meters long and overfour meters in diameter. As such, in some instances, a dedicated road isneeded, but may not be possible. Accordingly, lattice tower structuresmay be utilized since they do not experience the same transportationissues.

FIGS. 1 and 2 are perspective views of a plurality of wind turbines 40having a lattice tower structure 48 known in the art. The wind turbines40 include a plurality of blades 42 mounted to a rotor hub 44, which inturn is rotationally supported by power generation components housedwithin a nacelle 46, as is well known in the art. The nacelle 46 issupported atop the lattice tower structure 48, which in the illustratedembodiments is formed by legs 50, horizontal braces 54, and diagonalbraces 52. The legs 50 are typically angle iron members or pipe members,and the braces 52, 54 are typically angle iron members. The verticalsupports (legs 50) are typically provided for bending loads, whereas thecross support-members 52, 54 connect the legs 50 and are typicallyprovided for torsional loads. These lattice frame tower structures 48are also referred to in the art as “space frame” towers. The latticetower structure 48 may be fabricated in sections and erected at the windturbine site. FIG. 3 is a more detailed view of the structural membersof the lattice structure tower 48, and particularly illustrates theconnection locations between the braces 52, 54 and the legs 50, as wellas between aligned sections of the legs 50. Typically, a plurality ofbolt connections 60 are utilized at these various connection locations.

In addition, as shown in FIG. 1, it is known in the art to apply acladding material 56 over the lattice structure 48, which is typicallyany suitable fabric, such as an architectural fabric designed for harshweather conditions. The cladding material 56 protects workers andequipment within the tower and provides an aesthetic appearance to thewind turbine 40.

The cladding material 56 is typically wrapped around the lattice towerstructure 48 and tensioned by a set of dedicated hardware attached tothe structural members. The cladding material 56, however, must bepre-formed and the dedicated hardware must be fabricated, both of whichadd costs to the lattice tower structure 48. Further, the claddingmaterial 56 may relax over time, thus requiring constant maintenance tomaintain the tension in the fabric to prevent wind damage.

In addition, the cladding material 56 covers the bolt connections makingthem difficult for operators to access. As such, typical lattice towersinclude more expensive nut inserts or simple pull rivets to provide foreasier installation. The nut inserts, however, are expensive, and thepull rivets are not as strong as a nut and bolt configuration.Accordingly, more fasteners are required, which increase the costs ofthe tower.

Accordingly, an improved lattice tower covering for a wind turbine thataddresses the aforementioned problems would be desired in the art.

BRIEF DESCRIPTION OF THE INVENTION

Aspects and advantages of the invention will be set forth in part in thefollowing description, or may be obvious from the description, or may belearned through practice of the invention.

In accordance with aspects of the invention, a lattice tower assemblyfor a wind turbine is disclosed. The lattice tower assembly includes aplurality of structural members connected together to define an openlattice tower. The structural members include a plurality of supports, aplurality of inner cross-support members, and a plurality of outercross-support members. The inner and outer cross-support members areconnected between the supports so as to define one or more openings. Inaddition, the lattice tower assembly includes a lattice tower coveringhaving one or more panel elements. Each of the panel elements areretained in position between the supports and cover at least a portionof one or more of the openings. Further, the lattice tower covering hasa surface area defined by the plurality of supports and the one or morepanel elements.

In another embodiment, the plurality of supports may be configured so asto define an internal volume between each of the supports, wherein thepanel elements are connected between the supports within the internalvolume. In a further embodiment, the internal volume is defined by aheight of each of the supports, a distance between the supports, and awidth of each of the supports.

In still another embodiment, the panel elements may be sandwichedbetween the inner and outer cross-support members so as to cover atleast a portion of the openings. Alternatively, the panel elements maybe coupled between the inner cross-support members, between the outercross-support members, or both. In still further embodiments, the panelelements may be coupled to one or more of the cross-support members. Inyet another embodiment, the one or more panel elements may be spacedapart from the cross-support member or may abut against thecross-support members. In a further embodiment, the panel elements maybe configured on an exterior side of the outer cross-support members, aninterior side of the inner cross-support members, or a combinationthereof.

In still another embodiment, each of the panel elements may have acorrugated profile, a curved profile, a flat profile, or any othersuitable profile. In addition, the panel elements may be constructed ofany suitable material, including a thermoplastic polymer, a metal, orsimilar. More specifically, the thermoplastic polymer may include apolycarbonate.

In further embodiments, the lattice tower assembly may also include oneor more joints configured to secure the panel elements to the structuralmembers of the lattice tower assembly. For example, the joints mayinclude any of the following joint types: a flat plate joint, apanel-leg joint, a Z-joint, an H-joint, a bolted-joint, a U-shapedjoint, or similar.

In another aspect, a lattice tower assembly for a wind turbine isdisclosed. The lattice tower assembly includes a plurality of structuralmembers connected together to define an open lattice tower. Thestructural members may include a plurality of supports, a plurality ofinner cross-support members, and a plurality of outer cross-supportmembers. The inner and outer cross-support members are connected betweenthe supports so as to define one or more openings. The lattice towerassembly also includes a lattice tower covering having one or more panelelements coupled between the inner and outer cross-support members. Assuch, the panel elements are sandwiched between the inner and outercross-support members so as to cover at least a portion of one or moreof the openings.

In another aspect, a lattice tower covering for a lattice tower assemblyof a wind turbine is disclosed. The lattice tower assembly typically hasa plurality of structural members including a plurality of supports, aplurality of inner cross-support members, and a plurality of outercross-support members. The lattice tower covering includes a pluralityof panel elements configured to cover one or more openings defined bythe structural members. Each of the panel elements have a predeterminedsize and shape configured for a certain location on the lattice towerstructure. Further, the panel elements are configured for assemblybetween the supports such that the panel elements and the supportsdefine a surface area of the lattice tower structure when assembled.

In a further embodiment, the lattice tower covering further includes oneor more joints configured to secure each of the panel elements to thelattice tower structure. In another embodiment, the panel elements areconfigured to be sandwiched between the inner and outer cross-supportmembers so as to cover at least a portion of the one or more openings.In still a further embodiment, the panel elements are configured to becoupled between the inner cross-support members, the outer cross-supportmembers, or a combination thereof. In yet another embodiment, the panelelements are configured to be coupled to one or more of thecross-support members.

In still additional embodiments, the panel elements may include acorrugated profile, a curved profile, a flat profile, or any othersuitable profile. Further, the shape of the panel elements may be anysuitable shape including one of or a combination of the followingshapes: a square, a rectangle, a triangle, a trapezoid, or similar.

These and other features, aspects and advantages of the presentinvention will become better understood with reference to the followingdescription and appended claims. The accompanying drawings, which areincorporated in and constitute a part of this specification, illustrateembodiments of the invention and, together with the description, serveto explain the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

A full and enabling disclosure of the present invention, including thebest mode thereof, directed to one of ordinary skill in the art, is setforth in the specification, which makes reference to the appendedfigures, in which:

FIG. 1 illustrates a perspective view of a wind turbine with a latticetower structure including a conventional cladding material;

FIG. 2 illustrates a perspective view of another wind turbine with alattice tower structure without a cladding material;

FIG. 3 illustrates a detailed perspective view of structural members ofa conventional lattice tower of a wind turbine;

FIG. 4 illustrates a perspective view of one embodiment of a latticetower assembly according to the present disclosure;

FIG. 5 illustrates a detailed perspective view of a portion of theembodiment of FIG. 4;

FIG. 6 illustrates a cross-sectional view of the embodiment of FIG. 5along line 6-6;

FIG. 7 illustrates a detailed perspective view of another embodiment ofa lattice tower assembly according to the present disclosure;

FIG. 8 illustrates a detailed perspective view of another embodiment ofa lattice tower assembly according to the present disclosure;

FIG. 9 illustrates a detailed perspective view of another embodiment ofa lattice tower assembly according to the present disclosure;

FIG. 10 illustrates a perspective view of one embodiment of joint for alattice tower assembly according to the present disclosure;

FIG. 11 illustrates a cross-sectional view of another embodiment of ajoint for a lattice tower assembly according to the present disclosure;

FIG. 12 illustrates a cross-sectional view of another embodiment of ajoint for a lattice tower assembly according to the present disclosure;and,

FIG. 13 illustrates a cross-sectional view of another embodiment of ajoint for a lattice tower assembly according to the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

Reference now will be made in detail to embodiments of the invention,one or more examples of which are illustrated in the drawings. Eachexample is provided by way of explanation of the invention, notlimitation of the invention. In fact, it will be apparent to thoseskilled in the art that various modifications and variations can be madein the present invention without departing from the scope or spirit ofthe invention. For instance, features illustrated or described as partof one embodiment can be used with another embodiment to yield a stillfurther embodiment. Thus, it is intended that the present inventioncovers such modifications and variations as come within the scope of theappended claims and their equivalents.

Generally, the present subject matter is directed to a lattice towercovering for a lattice tower structure of a wind turbine and a latticetower assembly including the same. The lattice tower assembly typicallyincludes a plurality of structural members including a plurality ofsupports or legs, a plurality of inner cross-support members, and aplurality of outer cross-support members. The inner and outercross-support members are connected between the supports so as to defineone or more openings. The lattice tower covering may include one or morepanel elements coupled between the supports so as to cover at least aportion of the openings. In one embodiment, the lattice tower coveringhas a surface area defined by the supports and the panel elements. In afurther embodiment, the panel elements may be sandwiched between theinner and outer cross-support members so as to cover at least a portionof the one or more openings. Alternatively, the panel elements may becoupled between the inner cross-support members, the outer cross-supportmembers, or both.

The lattice tower covering and/or assembly of the present disclosureprovides various advantages not present in the prior art. For example,the existing legs and cross-support members of the lattice tower may beutilized to support the lattice tower covering. As such, minimaladditional hardware is required to install the covering. Further, thecovering does not become slack over time like the fabric embodiments ofconventional cladding systems; therefore, re-tensioning is not required.In addition, the covering is safer, more secure, bird-proof, andaesthetically more appealing than previous cladding systems. Stillfurther advantages include low maintenance, faster assembly, lessrepairs, easy access to tower bolt connections, and cheaperinstallation. For example, in various embodiments, the panel elementsare installed such that the bolt connections that join the supports andcross-support members are still accessible to an operator from bothsides (i.e. from the exterior of the tower and the interior of thetower). As such, standard nut and bolt configurations may be utilizedwith the lattice tower assembly, which provide easier installation andless costs than the nut inserts, pull rivets, or similar used inconventional cladding systems. Still further advantages of the latticetower covering described herein include a covering that leaves the outersurface of the current supports uncovered, thereby requiring lessmaterial (i.e. panel elements) to cover the internal components of thetower than previous cladding covers that wrapped around the supports.

Referring now to the drawings, FIGS. 4-7 illustrate various views of oneembodiment of a lattice tower covering 30 and/or assembly 12 accordingto the present disclosure. More specifically, FIG. 4 illustrates aperspective view of one embodiment of a wind turbine 10 including thelattice tower covering 30 of the present disclosure. As shown, the windturbine 10 includes the tower assembly 12 extending from a supportsurface 14, a nacelle 16 mounted on the tower 12, and a rotor 18 coupledto the nacelle 16. The rotor 18 includes a rotatable hub 20 and at leastone rotor blade 22 coupled to and extending outwardly from the hub 20.For example, in the illustrated embodiment, the rotor 18 includes threerotor blades 22. However, in an alternative embodiment, the rotor 18 mayinclude more or less than three rotor blades 22. Each rotor blade 22 maybe spaced about the hub 20 to facilitate rotating the rotor 18 to enablekinetic energy to be transferred from the wind into usable mechanicalenergy, and subsequently, electrical energy. For instance, the hub 20may be rotatably coupled to an electric generator 24 positioned withinthe nacelle 16 to permit electrical energy to be produced.

As shown in the illustrated embodiments, the lattice tower assembly 12of the wind turbine 10 includes supports or legs 24, inner cross-supportmembers 28, outer cross-support members 26, and the lattice towercovering 30. The supports 24 typically extend in a generally verticaldirection from the support surface 14. The inner and outer cross-supportmembers 26, 28 are typically connected between the supports 24 so as todefine one or more openings 25. In addition, the lattice tower covering30 may include one or more panel elements 23 configured to cover one ormore of the openings 25. Further, in various embodiments, each of thepanel elements 23 may have a predetermined size and/or shape configuredfor a certain location on the lattice tower structure 12. For example,as shown in FIG. 4, the panel elements 23 towards the bottom of thetower 12 are larger than the panel elements 30 at the top of the tower12. As such, various coverings 30 can be designed according to specificdimensions of multiple wind turbine towers. Accordingly, the coverings30 may be retrofitted to existing lattice tower structures.

Still referring to FIGS. 4 and 5, each of the panel elements 23 may beretained in position between the supports 24 so as to cover at least aportion of one or more of the openings 25. More specifically, in oneembodiment, the panel elements 23 may be retained solely between thesupports 24 such that the panel elements 23 do not cover the supports24. In such an embodiment, any loads experienced by the panel elements23 are transmitted through the supports 24, rather than adjacent panelelements 23. It should be understood that each of the panel elements 23may be retained in position between the supports 24 by being coupled tothe supports 24, to the cross-support members 26, 28, or to each other.

In additional embodiments, the lattice tower covering 30 has a surfacearea defined by the plurality of supports 24 and the one or more panelelements 23. More specifically, in one embodiment, the surface area ofthe covering 30 is the total area of the exterior surfaces of thecovering 30, including the exterior surfaces of the supports 24 and thepanel elements 23. In other words, when the panel elements 23 cover theopenings 25, thereby leaving the supports 24 exposed, the surface areaof the covering 30 includes the exterior surfaces of the supports 24 andthe panel elements 23. Such a configuration saves material and utilizesexisting hardware of the lattice tower assembly 12. Alternatively, inanother embodiment, the panel elements 23 may be configured to cover thesupports 24 such that the surface area is defined by the exteriorsurfaces of the panel elements 23 only.

Referring now to FIG. 6, the supports 24 may be configured so as todefine an internal volume 32 between each of the supports 24. Morespecifically, FIG. 6 illustrates a cross-sectional view of theembodiment of FIG. 5 along line 6-6 is illustrated. In the illustratedembodiment, the internal volume 32 is defined by a height H of each ofthe supports 24 (FIG. 4), a distance D between the supports 24, and awidth W of each of the supports 24. As such, in one embodiment, thepanel elements 23 may be connected between the supports 24 within theinternal volume 32 so as to cover at least a portion of the one or moreopenings 25. Alternatively, the panel elements 23 may extend outside ofthe internal volume 32 defined by the supports 24.

Referring specifically to FIGS. 4-7, in the illustrated embodiments, thepanel elements 23 may be sandwiched between the inner and outercross-support members 26, 28 so as to cover at least a portion of theone or more openings 25. As such, the structural members of the latticetower assembly 12 support the panel elements 23. Accordingly, thelattice tower covering 30 remains in place and no tightening is requiredafter installation. In such an embodiment, the panel elements 23 may beinstalled utilizing a variety of techniques. For example, the supports24 and the inner cross-support members 28 can be installed first, thenthe panel elements 23 can be installed between the supports 24, then theouter cross-support members 26 can be installed atop the panel elements23 to secure the lattice tower covering 30. Alternatively, the supports24 and the inner and outer cross-support members 26, 28 can be installedfirst, then the panel elements 23 can be inserted between the inner andouter cross-support members 26, 28 to secure the lattice tower covering30. In either instance, the panel elements 23 may be coupled to theinner or outer cross-support members 26, 28 or may only be coupled tothe supports 24.

Referring now to FIGS. 8 and 9, further embodiments of the lattice towerassembly 12 according to the present disclosure are illustrated. Forexample, referring particularly to the embodiment of FIG. 8, the panelelements 23 may also be coupled between two outer cross-support members26 on an exterior side of the lattice tower assembly 12. Morespecifically, the panel elements 23 may be configured on an exteriorside 27 of the outer cross-support members 26 as shown. Alternatively,the panel elements 23 may be coupled between two the inner cross-supportmembers 28 on an interior side of the lattice tower assembly 12. Morespecifically, the panel elements 23 may be configured on an interiorside 29 of the inner cross-support members 28. In still furtherembodiments, a portion of the panel elements 23 may be coupled betweenthe inner cross-support members 28 and a portion of the panel elements23 may be coupled between the outer cross-support members 26.

In the illustrated embodiment, the panel element 23 is assembled in aframe 38, similar to that of a window frame, before it is bolted to thesupports 24 and/or the cross-support members 26, 28. As discussed inmore detail below, the frame 38 may include one or more joints 34 forconnecting the panel element 23 to the supports 24 and/or thecross-support members 26, 28.

Still referring to FIGS. 8 and 9, the panel elements 23 may be spacedapart from the cross-support members 26, 28 or may be coupled to thecross-support members 26, 28. For example, as shown in FIG. 8, the panelelement 23 is coupled to the outer cross-support member 26. In contrast,as shown in FIG. 9, the panel elements 23 are coupled only to thesupports 24 and are spaced apart from the cross-support members 26, 28.

Referring back to FIG. 6, the panel elements 23 may have any suitableprofile or cross-sectional shape. For example, as shown, the panelelement 23 has a corrugated profile. In still further embodiments, thepanel elements 23 may have a flat or smooth profile or a curved profile(FIG. 9). As used herein, the term “corrugated profile” is meant toencompass any profile having alternating grooves or ridges, wherein theridges or grooves may have any suitable shape. For example, as shown,the corrugated profile has substantially rectangular grooves. The curvedor arcuate profile may be pre-formed in the panel element 23 or may be aproduct of installation between the supports 24. For example, as shownin FIG. 9, the panel elements 23 may have a substantially flat profilebefore installation, but due to the flexible material of the panelelements 23 may flex to a curved profile after installation.

In addition, the panel elements may be any suitable shape. For example,as shown in FIGS. 4 and 5, the panel elements 30 have a generallytrapezoidal shape. In further embodiments, as shown in FIG. 7, the panelelements 30 have a generally rectangular shape. In still furtherembodiments, the shape the panel elements 30 may be any of the followingshapes: a square, a rectangle, a triangle, a trapezoid, a circle, anoval, a parallelogram, or similar. Moreover, each of the panel elements30 may each have the same shape or may each have a different shape.

It should also be understood that the panel elements 23 as describedherein may be installed using any suitable hardware or materials. Forexample, the panel elements 23 may be installed using entirely existinghardware of the lattice tower assembly 12. In addition, the panelelements 23 may be installed using various joint configurations. Forexample, as shown in FIGS. 7-9, the joints 34 may be configured betweenone or more panel elements 23 or the panel elements 23 and other variouscomponents of the lattice tower assembly 12. More specifically, as shownin FIGS. 7 and 9, the joints 34 may be configured between the panelelements 23 and the supports 24. Further, as shown in FIG. 8, the joints34 may be configured between the panel elements 23 and the outercross-support members 26. In still further embodiments, the joints 34may be configured between the panel elements 23 and any other componentsof the lattice tower assembly 12.

Referring now to FIGS. 10-13, various joint configurations for couplingand/or securing the panel elements 23 to the lattice tower assembly 12are illustrated. For example, as shown in FIG. 10, a panel-leg joint 36is illustrated. As shown, the panel-leg joint 36 includes a cavity 45 anoverhang 47 that secures the panel element 23. In addition, the overhang47 can act as a spring against the panel element 23, thereby allowingthe panel element 23 to expand. Further, as shown in FIG. 11, aflat-plate joint 36 is illustrated. The flat-plate joint 36 typicallyconsists of at least two flat plates that sandwich joined components(e.g. two panel elements 23) secured with adhesive or tape 31. Moreover,FIG. 12 illustrates a Z-joint 37. The Z-joint 37 typically connects thejoined components by connecting to a first side of a first component viatape 31 and connecting to an opposite side of a second component viatape 31. As such, the joint 37 is generally shaped to correspond to a“Z,” as shown in FIG. 12.

In still another embodiment, the joint 34 may be an H-joint 39. Forexample, as shown in FIG. 13, two panel elements 23 are inserted intoopposing sections of the “H” and bolted therein using one or morefasteners. For example, as shown, the fasteners include a plurality ofbolts 41 and nuts 43. In further embodiments, the fasteners may includeone or more rivets. Such an embodiment provides numerous advantages. Forexample, installation of the panel elements 23 using rivets can becompleted on the exterior of the tower 12 without requiring access tothe interior of the tower 12. The H-joint may also include seals 33within corresponding “H” sections.

In yet a further embodiment, the joints 34 may be U-shaped joints. Forexample, as shown in FIG. 9, a plurality of longitudinal U-shaped jointsare attached to the supports 24 so as to receive the panel elements 23therein. It should also be understood that the joints 34 describedherein are not intended to limit the scope of the present disclosure andare provided for example only. As such, the present disclosure mayinclude any suitable joint known in the art.

The panel elements 23 described herein may also be constructed of anysuitable material known in the art. For example, in one embodiment, thepanel elements 23 may be fabricated of a thermoplastic polymer or ametal. More specifically, the thermoplastic polymer may include apolycarbonate. Polycarbonate panel elements 23 may be configured toprovide a light-weight but virtually unbreakable covering for thelattice tower assembly 12. In addition, in various embodiments, thepanel elements 23, whether constructed of polycarbonate or anothersuitable material, may be UV resistant, flame retardant, light weight,resistive to impact, flexible, and/or any other desired characteristics.Further, each of the panel elements 23 may be constructed of similarmaterials or may be each constructed of different materials. Forexample, as shown in FIGS. 4 and 5, a portion of the lattice towercovering 30 includes metal panel elements 23 and a portion of thelattice tower covering includes polycarbonate panel elements 23.

In still further embodiments, the lattice tower assembly 12 may befabricated in sections and erected at the wind turbine site. As such,the panel elements 23 may be installed within each section before thetower 12 is assembled to reduce and/or eliminate uptower installation ofthe covering 30. Alternatively, the panel elements 23 may be installedafter the sections have been installed to the support surface 14.

This written description uses examples to disclose the invention,including the best mode, and also to enable any person skilled in theart to practice the invention, including making and using any devices orsystems and performing any incorporated methods. The patentable scope ofthe invention is defined by the claims, and may include other examplesthat occur to those skilled in the art. Such other examples are intendedto be within the scope of the claims if they include structural elementsthat do not differ from the literal language of the claims, or if theyinclude equivalent structural elements with insubstantial differencesfrom the literal languages of the claims.

What is claimed is:
 1. A lattice tower assembly for a wind turbine, thelattice tower assembly comprising: a plurality of structural membersconnected together to define an open lattice tower, the structuralmembers comprising a plurality of supports, a plurality of innercross-support members, and a plurality of outer cross-support members,the inner and outer cross-support members being connected between thesupports so as to define one or more openings, wherein each of the innercross-support members overlaps one of the outer cross-support members;and, a lattice tower covering comprising one or more panel elements,each of the panel elements sandwiched between overlapping inner andouter cross-support members, wherein the panel elements are configuredto cover at least a portion of one or more of the openings, and whereinthe lattice tower covering comprises a surface area defined by theplurality of supports and the one or more panel elements.
 2. The latticetower assembly of claim 1, wherein the plurality of supports areconfigured so as to define an internal volume between each of thesupports, wherein the panel elements are connected between the supportswithin the internal volume.
 3. The lattice tower assembly of claim 2,wherein the internal volume is defined by a height of each of thesupports, a distance between the supports, and a width of each of thesupports.
 4. The lattice tower assembly of claim 1, wherein the one ormore panel elements are coupled to one or more of the cross-supportmembers.
 5. The lattice tower assembly of claim 1, wherein each of theone or more panel elements comprise one of a corrugated profile, acurved profile, or a flat profile.
 6. The lattice tower assembly ofclaim 1, wherein the one or more panel elements are constructed of oneof or a combination of a thermoplastic polymer or a metal, wherein thethermoplastic polymer comprises a polycarbonate.
 7. The lattice towerassembly of claim 1, further comprising one or more joints configured tosecure the panel elements to the lattice tower assembly.
 8. The latticetower assembly of claim 7, wherein the one or more joints furthercomprise at least one of a flat plate joint, a panel-leg joint, aZ-joint, an H-joint, a bolted-joint, or a U-shaped joint.